Brush Blue vs Sea Serpent
Where Brush Blue belongs to Benjamin Moore's range, Sea Serpent is a Sherwin-Williams color. Hue-wise, Brush Blue belongs to the blue-grey family and Sea Serpent to the blue family. Brush Blue (LRV 10) reflects noticeably more light than Sea Serpent (LRV 7), a difference of 3 points that becomes especially apparent in rooms with limited natural light. Brush Blue runs blue while Sea Serpent is decidedly cool, which means they'll respond very differently to warm vs cool light sources. At ΔE 1.8, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Brush Blue vs Sea Serpent in Real Spaces
2 real rooms side by side. Brush Blue and Sea Serpent are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The brightness difference is modest but present — Brush Blue gives the walls a little more lift.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Brush Blue reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Brush Blue vs Sea Serpent Simulated Comparison
5 simulated room previews — drag the slider on each to see Brush Blue on one side and Sea Serpent on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Brush Blue comparisons
See how Brush Blue stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 10), opening up a space where Brush Blue encloses it.
At LRV 83 vs 10, White Dove is decisively the brighter choice.
A 4-point LRV gap (10 vs 6) makes Brush Blue the marginally brighter of the two.
Purbeck Stone reflects far more light (LRV 52 vs 10), opening up a space where Brush Blue encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 10), opening up a space where Brush Blue encloses it.
At LRV 52 vs 10, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 10), opening up a space where Brush Blue encloses it.
At LRV 58 vs 10, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 10, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 10), opening up a space where Brush Blue encloses it.
Brush Blue reads slightly lighter (LRV 10 vs 4), a gap that shows most in low-lit rooms.
At LRV 55 vs 10, Tranquil Dawn is decisively the brighter choice.
A 4-point LRV gap (13 vs 10) makes Bancha the marginally brighter of the two.
At LRV 44 vs 10, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 10), opening up a space where Brush Blue encloses it.
Artichoke reads slightly lighter (LRV 21 vs 10), a gap that shows most in low-lit rooms.
At LRV 66 vs 10, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 10, Shoji White is decisively the brighter choice.
At LRV 83 vs 10, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 10), opening up a space where Brush Blue encloses it.
Their light reflectance is nearly identical (LRV 12 vs 10), so neither reads brighter in a room.
Their light reflectance is nearly identical (LRV 10 vs 8), so neither reads brighter in a room.
At LRV 68 vs 10, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 10), opening up a space where Brush Blue encloses it.
Their light reflectance is nearly identical (LRV 12 vs 10), so neither reads brighter in a room.
At LRV 45 vs 10, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 10), opening up a space where Brush Blue encloses it.